Answer:
f'(t) = -15 tons/second
Step-by-step explanation:
Using the power rule, the derivative of f(t) is ...
f'(t) = -15 . . . tons/second
f(t) is the fuel weight, so f'(t) is the rate at which fuel weight is changing. The rocket is using fuel at the rate of 15 tons per second.
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<em>Comment on units</em>
The units of the equation for f(t) are ...
f(t) = 2520 tons - (15 tons/second)(t seconds)
The derivative is the coefficient of (t seconds), so is (-15 tons/second).
Answer:
Step-by-step explanation:
hello :
r+b=7... (*)
3.75r+2.75b=22.25.... (**)
use (*) : r = 7 - b
put this value in (**) :
3.75(7 - b)+2.75b = 22.25
26.25 -375b +2.75b = 22.5
-375b +2.75b = 22.5 - 26.25
- b = -3.75
so : b = 3.75
but : r = 7 - b
r = 7 - 3.75
r = 3.25
<u>4</u> = <u>x
</u> 18 90
(4 * 90) / 18 = 20
<u>
</u> x = 20 So Angie can run 20 miles in 90 minutes!<u>
</u>
Answer:
x = 22
Step-by-step explanation:
The x Is a number that is greater than the 15.
so you add the 7 and the 15 which gives you 22
22-7 equals 15
Hope this helps
E is your answer becuz y1 - x1 over x2-x1 thats slope=m
